Switch.



G. W. HART.

SWITCH.

APPLICATION FILED NOV.26,1913- Patented July 14, 1914;

2 snnn'rssnnn'r 1.

G. W. HART.

SWITCH.

APPLICATION FILED nov. 26, 1913.

2 SHEETS-SHEET 2.

Patented July 14, 1911 UNITED STATES PATEN T OFFICE.

GERALD W. IIAR'I, OF WEST HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART MANUFACTURING COIVLPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF N EVJ JERSEY.

SWITCH.

To all whom it may concern Be it known that I, GERALD W. HART, a citizen of the United States, residing at West Hartford, Hartford county, Connecticut, have invented certain "newand useful Improvements in Switches, of which the following is a full, clear, and exact description.

My invention-relates to improvements in switches, and hasfor its object to produce a new and improved auxiliary circuit breaker for making and breaking at the proper times closing'and opening circuits of a remotecontrolled switch.

It also has for its object to prduce an auxiliary circuit breaker in which neither of the makln or breaking actions are produced directly by the closing or opening movement of the'main switch arm or nected thereto. It also has for its object to produce 'an auxiliary circuit breaker in'which turning of the contacts will not be liable to interfere with its action.

It also has for its *object to secure the various advantages arisingfrom the com bination hereinafter described and particularly referred to in theclaims.

The following is a desc ription'of an embodiment of my'invent'ion, reference being bad to the accompanying drawings, in which Figure 1 shows a plan view of a remotecontrolled switch embodying my invention. Fig. 2 shows a longitudinal vertical section of the same on the line 2-2 Fig. 1. Fig. 3 shows a vertical section of the releasing coil of the remote-controlled switch, together with the locking device and the auxiliary circuit breaker, on the line 3--3 Fig. 4:. Fig. 4 is a plan view of the circuit breaker. Fig. 5 is a similar view, with the armature removed. Fig. 6 is a. sectional view on the line 6-6 Fig. 4. Fig. 7 is a diagram of circuits.

Referring more particularly to the drawings, 1 is an insulating base having contacts 2-2 adapted to be connected by switch arms 3. These switch arms are connected to a crossbar 4 so as to be insulated therefrom. From this cross-bar depend magnetic cores 5, against which act springs 6 normally tending to lift the same, together with the switch arms 3-3. 4

7-7 are stops limiting the upward movement of the switch arms.

parts rigidly con- Specification of Letters Patent.

atent ed 11; 1 d, 1914.

Application filed November 26,1913;- Serial Nb. 803,144;

88 are solenoids which when energized act to draw thecore's 5 and the switch arms connected thereto downwardly so as to close the switch JS'ec ured to the bar 4 isa downward projection. 9 having" a bore within which is located a movable plunger 10. The upper end of the bore is enlarged so as to contain a spring 11, which bears upon a flange 12 connected to theplun'ger, and tends to hold the same'indepressed position; The plunger is provided with an extension 13 and a shoulder; It forming an abutment which engages afb'all detent 15 in the recess near the lowe i'f'end offthe projection; 9. When the plunger is'in depressed position, as shown in Fig.2, the abutment arried thereby forces the ball 15"partially tutor its recess. and engagement withashoulder 16 on a stationary magnetic core, said shouL der constituting a stationary; abutment. The

forcing o fthe ball 15 partially out 'of its recess andintoengagement withthe shoulder 16 lockshthe rempte-controlled switch closed-and holds it in'that position so long as the plunger 10 is in depressed position.

The remote-controlled switch, so far as described above, has already been described and claimed in myapplication No. 570,693, filed July 7th, 1910, and is shown and described in this application forthe purpose of describing my present improvement in connection therewith.

In order to provide means for releasing the switch arms 'I'provide an armature 17, which, when the solenoid 17 is energized, is lifted so as to act through the pin 13 to raise the plunger 10 sufficiently to permit the balls 15 to reenter its recess. In order to control the circuit 13 in a proper manner, I provide contacts 18 mounted on a suitable insulating base 19 and a movable switch arm 20 carried by a bushing 21 but insulated therefrom. This bushin 21 is mounted on a tubular member 22. T is tubular member has a flange 23 and is engaged by a spring 24, which tends to force it upward so that the flange 23 engages the bushing 21 and lifts the switch arm 20, thereby separating it from the terminals 18. The spring 24 bears against an internal shoulder on the member 22. Upon the upper surface of the bushing 21 bears a spring-25, the upper end of this spring resting against asuitable abutment hereinafter described. When the remotecontrolled switch is closed, the lower end of tacts 26 and o the projection 9 engages the upper end of the tubular member 22, forcing it downward so as to tend to withdraw the fiange 23 from the lower side of the bushing 21; The spring 25 thereupon pushes the bushing 21 downward so as to bring the switch arm 20 into engagement with the contacts 18l8 and thereby close the circuit of? the solenoid 17 -5 When the solenoid l7 vis energized,: the;

second jQIQmOuDted, on removable s ns llc e ebil m' i li di 'th' r r sk'p eisisi hu' h g' e n mounted upon' 'the"tubiilarineinber 22 above the shing 2ll fThisjbiishing28 forms the h r "llqi e e ft al' n i 3 ch together [with the1 1sprhig;l24,"' tend to make the bushing 28, together s witch arm inove upward sol that 'the sw itch arm 27 w :engage'the contacts 26;} Thearmature I7 h fs'LEan internal {portion l lfIconnected thereto which dep'eiid s so. asto rest upon the bashing-28. This armature is provided with curved 5 slots separated a hridging por- 29; 'The upper end of th e tubular memf ber 22 is slotted so as to form two projecti'ons 22f which pass upward through the cun 'edslot's in the armature so as .to a be in position to be engaged'by the: lower end of the projection 9, the portion 2 9 of the armaturellying between them being in position, to engagefor bc engagedby .the -pin 13 of/the plunger '10. I

vThe action of the switch, arm 26 is as follows {When the remote-controlled switch is closed the actionof the solenoids 8, the projection 9, together with theplungerlO, is moved downward until the ball 15 reaches locking position. Thereupon the plunger 10 moves still farther downward, forcing the ball into locking :position and at the same time the lower end .of the vpin- 13 engages the portion 29 of the armature, forcing itdownward, together with the bushing 28 and the switch a-rmv27 carried thereby, separating the switch arm 27 from the conpening the circuit through the closing soleno1ds 4-8 Itis-to be noted that this circuit is not opened until the remotecontrolled switch is fully locked, but upon its being fully locked-is immediately opened by the positive action due to the spring 11. It has heretofore been pointed out that as the remote-controlled "switch is closed; the projection 9 engages withithe upper ends 22 of the tubular member 22;f0i'0ing it downward so as to permit theswitch arm to engage the contacts 18. These contacts 'are in'the circuit of the switch opening-sole noid. l7 and the engagement of the switch arm 20 therewith just prior to the complete closing of the remote controlled. switch closes the circuit'th-rough the s olenoid: 1'? at the auxiliary circuit breaker, so that it isin condition to be energized 'by the looaljcir cuil i lontrpll rj rattle. desired remote; point. W n h 'jsgfle q i is ub e ieit m g d;:-' 1.## i h't t'fl? m p u tl'tt 'g the eems-em uponftflie remote-controlled ls witchi opens and theglq'wer d; cf, the pfQjCl1iOIi9 5 with; ,fje i Q a Bastie est e 2ft 't o e ngage the 'contactsgathereb est asset h ee h, the

a1so pei'm1tsthe s yiwasrmgea to be wit ter the I switch has been complete The-seen S and. .25 7 erm t 1 ew meebei to. W a movement ins ect vs i to he SW f tms 2am a and also permit said switch to h aye movements independently of one another, th s r e eing a: devi e t n: Wh h 1 desir result will? IQQQWQQRl -hQQ Wi'hQflt exceeding a at; the parts; employed. The ends of the switch arms'and thecon tacts engaged-thereby are removed from. all parts where burningwould beliable'to do injury or interfere with the action o f ;the auxiliary circuit breaker. Moreover,.-.the contacts elongingto anyone circuitare widely separated, from 'one anotherand are broken by quick movements, ,so that sparking and its dangers are minimized. More: over, the -parts rigidly connected to the switch arm are .none of. them contained in either the; switch closing or the switch opcning circuit, the movements of these parts being utilized simply to actuate other parts having independent movement so as to bring about the desired result.-

A diagram of circuit connections is shown in Fig. 7. In this diagram M.M are two mains-leading from any suitablesource and supplying 22 are the main contacts connected to the mains MMM :and 2-2-2 are the main switch contacts connected ;to the tmnslating devices. 8 8 are the switch closing coils and--1-3;-;is the switch opening coil. 26-26 are thecontacts in serieswithcoils 8 and 18l8 are the contacts in series with the coil 17 Two of'the contacts :18"l8 are translating devices L-L, 2'-v orces up fl e I connected to the main M by a common connection. The coils 8-8 are in series and their outside terminal forms a part of a local circuit controller L, which is connected to the main M The free end of the solenoid 17 is also connected to a terminal forming a part of this local circuit controller.

As will be evident to those skilled in the art, the embodiment of my invention permits of various modifications without departure from the spirit thereof or the scope of the appended claims.

What I claim is:

1. In a remote-controlled switch, the com bination of an opening solenoid, contacts in the circuit thereof, a switch arm adapted to connect and disconnect said contacts, means tending to move said switch arm out of engagement with said cont-acts, a stationary base carrying said contacts and switch arm, said base being stationary relatively to the movable member of the remote controlled switch, said switch arm tending to move toward said movable member under the action of said spring and being movable relatively to said member and controlled thereby.

2. In a remote-controlled switch, the combination of an opening solenoid, contacts in the circuit thereof, a switch arm adapted to connect and disconnect said contacts and movable out of engagement therewith, a stationary base carrying said contacts and switch arm, said base being stationary relative to the moving member of the remotecontrolled switch, means whereby said switch arm is controlled by said moving member, a member carrying said switch arm, a spring permitting said switch arm and member to have independent movements but tending to move said switch arm toward said contacts, and a second spring tending to move both said member and said switch arm away from said contacts against the action of said first spring.

3. In a remote-controlled switch, the combination of an opening solenoid, contacts in the circuit thereof, a switch arm adapted to connect and disconnect said contacts and movable out of engagement therewith, a stationary base carrying said contacts and switch arm, said base being stationary relative to the moving member of the remotecontrolled switch, means whereby said switch arm is controlled by said moving member, a member carrying said switch arm, a spring permitting said switch arm and member to have independent movements but tending to move said switch arm toward said contacts, a second spring tending to move both said member and said switch arm away from said contacts against the action of said first spring, and a locking device carried by said movable member adapted to compress said first spring when the movable member is in locked position.

4. In a remote-controlled switch, the combination of an opening solenoid, contacts in the circuit thereof, a switch arm adapted to connect and disconnect said contacts, a stationary base carrying said contacts and switch arm, said base being stationary relative to the moving member of the remotecontrollcd switch, means whereby said switch arm is controlled by said moving member, a member carrying said switch arm, a resilient means permitting said switch arm and -member to have independent movements but tending to move said switch arm toward said contacts, a second resilient means tending to move both said member and said switch arm away from said contacts against the action of said first resilient means, a second switch arm carried by said member and separated from said first switch arm by said first mentioned resilient means, switch closing contacts adapted to be engaged thereby, and switch locking means for said remotecontrolled switch adapted to separate said last switch arm from its contacts when said remote-controlled switch is locked.

5. In a remote-controlled switch, the combination of an opening solenoid, contacts in the circuit thereof, a switch arm adapted to connect and disconnect said contacts, a stationary base carrying said contacts and switch arm, said base being stationary relative to the moving member of the remotecontrolled switch, means whereby said switch arm is controlled by said moving member, a member carrying said switch arm, a resilient means permitting said switch arm and member to have independent movements but tending to move said switch arm toward said contacts, a second resilient means tending to move both said member and said switch arm away from said contacts against the action of said first resilient. means, a second switch arm carried by said member and separated from said first switch arm by said first mentioned resilient means, switch closing contacts adapted to be engaged thereby, switch locking means for said remote-controlled switch adapted to separate said last switch arm from its contacts when said remote-controlled switch is locked, and an armature for releasing said lock, said armature having a. portion interposed between said lock and said switch arm.

H. B. BROWNELL, E. E. MORSE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

